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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 9: Diagnostics, Control and Instrumentation

AKBP 9.4: Vortrag

Dienstag, 17. März 2020, 17:15–17:30, MOL 213

Status of Slice Emittance Measurements at PITZ — •Raffael Niemczyk¹, Prach Boonpornprasert¹, Ye Chen¹, James Good¹, Matthias Gross¹, Holger Huck¹, Igor Isaev¹, Christian Koschitzki¹, Mikhail Krasilnikov¹, Shankar Lal¹, Xiangkun Li¹, Osip Lishilin¹, Gregor Loisch¹, David Melkumyan¹, Anne Oppelt¹, Houjun Qian¹, Hamed Shaker¹, Guan Shu¹, Frank Stephan¹, and Wolfgang Hillert² — ¹DESY, Zeuthen site — ²University of Hamburg

The Photo Injector Test facility at DESY in Zeuthen (PITZ) conditions and optimises high-brightness electron sources for the use at X-ray free-electron lasers (FELs). Since the lasing process occurs only on a fraction of the bunch, much smaller than the total bunch length, the slice emittance is of interest. To characterise the slice emittance, a measurement procedure was developed at PITZ, combining a single-slit scan with a transverse deflecting structure. The transportation of the beam at low energies of 20 MeV is complicated due to the high bunch charge and wide separation of the needed diagnostics devices. The slice emittance measurement setup, improving the beam transport, will be discussed. Also, problems arising from low signal-to-noise ratio during emittance measurements and possible solutions will be presented.